Effets of Cobalt Oxide-Iron Oxide Ratios on the Catalytic Activity of Cobalt Ferrite Spinel Catalysts A. A. Said, K. M. Abd El-Salaam, E. A. Hassan, A. M. El-Awad et M. M.M. Abd El-WahabJ. Phys. IV France, 07 C1 (1997) C1-687-C1-688DOI: https://doi.org/10.1051/jp4:19971282